HELP!!! i cant think of the formula! 1. The problem statement, all variables and given/known data A 0,05kg golf ball is driven from the tee at a speed of 80m/s. if the average accelerating force on the ball is 6500N, determine how long the clubhead is in contact with the ball. 2. Relevant equations 3. The attempt at a solution I have sat staring at this question for awhile. could somebody please help me out so i can substitute...?